New insights on the role of T cells in the pathogenesis of celiac disease.

Rossella Cianci, Giovanni Cammarota, Raffaele Landolfi, Simona Frosali, Franco Pandolfi, D Pagliari

Research output: Contribution to journalArticle

Abstract

Despite intense investigation, the pathogenetic mechanisms leading to villous atrophy in Celiac disease (CD) remain not completely understood. The traditional interpretation is that CD4 cells recognize gliadin and develop an inflammatory reaction by production of Th1 cytokines at the mucosa level inducing CD8 cells to kill mucosal cells by a direct cytotoxic mechanism or by Fas-mediated apoptosis. Recent data, however, have shown that novel CD4 T-cells subpopulations, CD4+ CD25+ Regulatory T cells (Tregs) and Th17 cells also play a role in the ongoing inflammatory process. Both Tregs and Th17 cells are increased in active CD. However, because Tregs have a suppressive activity on inflammation, their role is controversial. In this editorial we discuss these recent findings and the hypothesis formulated to explain the increase of Tregs. To understand the pathogenesis of tissue damage of CD, we have focused on the duodenal micro-environment, introducing the new concept of immunological niche that in CD summarizes cellular and cytokine interactions in duodenal mucosa, where a high plasticity of T-cell subsets is present. CD is often complicated by T-cell lymphomas, especially in cases of refractory CD.
Original languageEnglish
Pages (from-to)171-179
Number of pages9
JournalJOURNAL OF BIOLOGICAL REGULATORS & HOMEOSTATIC AGENTS
Volume26
Publication statusPublished - 2012

Keywords

  • CELIAC DISEASE

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